الإتاحة: https://doi.org/10.1186/s13063-022-06439-xTest
الإتاحة: https://doi.org/10.1080/1028415x.2023.2234704Test
الوصول الحر: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::21872a5fa42ab77327f5379fd879a4b9Test